Meaning: Blink of an eye
1 Cor. 15:51-52
Behold, I shew you a mystery; We shall not all sleep, but we shall all be changed, 52In a moment, in the twinkling of an eye, at the last trump: for the trumpet shall sound, and the dead shall be raised incorruptible, and we shall be changed.
Used by Shakespeare in The Merchant Of Venice.